<template>
	<view>
		<view class="goods-list">
			<view v-for="(goods,i) in goodsList" :key="i" @click="gotoDetail(goods)">
				<my-goods :goods="goods"></my-goods>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				//请求参数对象
				queryObj:{
					query:'',
					cid:'',
					pagenum:1,
					pagesize:10
				},
				goodsList:[],
				total:0,
				
				//节流阀--是否正在请求数据
				isloading:false
			};
		},
		onLoad(options){
			// console.log(options)
			this.queryObj.query = options.query || ''
			this.queryObj.cid = options.cid || ''
			console.log(this.queryObj)
			
			this.getGoodsList()
		},
		methods:{
			async getGoodsList(cb){
				//打开节流阀
				this.isloading = true
				const {data: res} =await uni.$http.get('/api/public/v1/goods/search',this.queryObj)
				
				//关闭节流阀
				this.isloading = false
				//短路运算符--只要数据请求完毕，就立即按需调用 cb回调函数
				cb && cb() 
				if(res.meta.status!==200) return uni.$showMsg()
				// this.goodsList = res.message.goods
				
				//为数据赋值，通过展开运算符的形式，进行新旧数据的拼接
				this.goodsList = [...this.goodsList,...res.message.goods]
				this.total = res.message.total
			},
			gotoDetail(goods){
				uni.navigateTo({
					url:'/subpkg/goods_detail/goods_detail?goods_id='+goods.goods_id
				})
			}
		},
		onReachBottom(){
			if(this.queryObj.pagenum * this.queryObj.pagesize >= this.total) return uni.$showMsg('数据加载完毕！')
			
			//如果isloading为true,说明当前正在请求其他数据，这次处理的事件就不再进行数据的请求了
			if(this.isloading) return
			this.queryObj.pagenum++
			this.getGoodsList()
			
		},
		onPullDownRefresh(){
			//重置关键数据
			this.queryObj.pagenum = 1
			this.total = 0
			this.isloading = false
			this.goodsList = []
			//重新发起数据请求（传回调函数）
			this.getGoodsList(()=> uni.stopPullDownRefresh())
		}
	}
</script>

<style lang="scss">

</style>
